Improve styles and alignment on empty profile cards

[shaunop]

These three cards need visual polish:

Here's the design with red guides to mark containers and text alignment:

Each container should use the same styling.

• 32pt inner padding
• Emoji/icon container 48pt x 48pt
• 16pt between container and text
• Icons are both 20pt x 20pt using Remix Icons (https://remixicon.com/icon/user-3-fill, https://remixicon.com/icon/add-fill)
• Dash lines should both use the same gray tone ("muted")

[linear[bot]]

AGORA-2975 Improve styles and alignment on empty profile cards